View JSON API value on php file - php

Question

I'm trying to create a php script to display only the "credit" value of the account 491027679-102 but it does not work, I get a white screen. Can you help me solve this problem?
This is the script I did, where I drew?
<?php
$url = 'https://www.vohippo.com/it/vohippo/user/ApiWhsGetSubList?email=mail#example.com&apikey=123';
$content = file_get_contents($url);
$apiResult = json_decode($content);
($apiResult['status'] !== 'ok') &&
trigger_error('Unexpected API Result');
empty(($account = array_filter($apiResult['result'], function($item) {
return $item['account'] === '491027679-102';
}))) && trigger_error('Account not found.');
echo $account[0]['credit'];
?>

Answer 1

If you already know the index of the parent array for the credit, you can do it as above echo $account[0]['credit'];.
If you don't know the index of the parent and it changes everytime in the $account variable, you should loop through the array.
Instead of using echo $account[0]['credit'];, you should loop through the array:
foreach ($account as $key => $value) {
echo $account[$key]['credit'];
}

Answer 2

Your script:
<?php
// https://stackoverflow.com/questions/54390848/view-json-api-value-on-php-file
$url = 'https://www.vohippo.com/it/vohippo/user/ApiWhsGetSubList?email=webmasterlertux#gmail.com&apikey=4c62479846b0aea59ac007f3a283b581';
$content = file_get_contents($url);
$apiResult = json_decode($content);
($apiResult['status'] !== 'ok') && trigger_error('Unexpected API Result');
empty(($account = array_filter($apiResult['result'], function($item) {
return $item['account'] === '491027679-102';
}))) && trigger_error('Account not found.');
echo $account[0]['credit'];
?>
My php version:
php-fpm at 87a5be43419e in /var/www/html
$ php --version
PHP 7.2.4 (cli) (built: Apr 5 2018 00:37:24) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
Running your script:
$ php question-54390848.php
Fatal error: Uncaught Error: Cannot use object of type stdClass as array in /var/www/html/question-54390848.php:9
Stack trace:
#0 {main}
thrown in /var/www/html/question-54390848.php on line 9
The error is in line 9 because you try to access an array when you an object, because in line 7 json_decode($content) gives you an object, but to get an array you need to do `json_decode($content, true).
Lets' fix it:
<?php
// https://stackoverflow.com/questions/54390848/view-json-api-value-on-php-file
$url = 'https://www.vohippo.com/it/vohippo/user/ApiWhsGetSubList?email=webmasterlertux#gmail.com&apikey=4c62479846b0aea59ac007f3a283b581';
$content = file_get_contents($url);
// Adding `true` to enable decoding to an array
$apiResult = json_decode($content, true);
($apiResult['status'] !== 'ok') && trigger_error('Unexpected API Result');
$account = [];
empty(($account = array_filter($apiResult['result'], function($item) {
return $item['account'] === '491027679-102';
}))) && trigger_error('Account not found.');
// using array_filter will return the array entries as they have been matched,
// thus your match happens in the array entry with key `1`, but you try to
// access the entry `0` in the echo statement.
// so using array_values will return all values in the array indexed from key `0`.
$account = array_values($account);
echo $account[0]['credit'];
?>
Another fix was needed in order you can access the $account[0] in your echo statement. Please read the comments in the code.
Running your script again:
php-fpm at 87a5be43419e in /var/www/html
$ php question-54390848.php
0.0000
NOTE: Your script needs to have more checks for errors with the response and when accessing the $account array.
SECURITY ALERT
You have published the API KEY in your question:
$url = 'https://www.vohippo.com/it/vohippo/user/ApiWhsGetSubList?email=webmasterlertux#gmail.com&apikey=4c62479846b0aea59ac007f3a283b581';
Now everyone can access this service in your behalf and if is a paid one you will be the one paying the bill.
Please reset this API KEY immediately and get a new one
API KEYS best practice is to be sent in the header